Curtain-roller.



f To" all 'whom 15 may concern UNITED STMLEBATENT oFFICE;

.finpwnnn n. wHIfrMonn, or CHICAGO, ILLINOIS, AssroNoze To rein CURTAIN SUPPLY .coMPANY, or NEWARK, New JERSEY, A oonronafrroN or New JERSEY.

Be it known that l, Eon/'inn E. VVHrr- "tivIoRn, a citizen of the United States, residi'ng at Chicago, in the county of Cook and,

State of Illinois, have invented certain new and useful Improvements in Curtainj Rollers, of which the following;` is a specifi- I'cation This invention relates to curtain rollers of the well known Hartshorn type, and has ffor its chief object to provide a longitudinally adjustable or extensible roller of vsuperior construction and efficiency in a variety of'ways as compared with the standard rollerof this type now in use. 'At present the longitudinal adjustment .or extensibility of these rollers is secured hy forming the saine in two hollow metallic yroller sections provided with registering '20g longitudinalgrooves to receive the upper edge of the curtain and a fastening wire,

the longer of they sections being equipped L internally with the usual torsion spring, *and the shorter with a connector in the form of a wooden plug lixedly secured in lthe open end of the shorter section and ,adapted to-interiorly telescope the open end of the longer section, said plug being provided with a longitudinal groove or channel that provides clearance for the inwardly bent meta-l forming the curtain-holding groove or channel of the metallic sections. Owing to the fact that the wooden plug constituting the telescoping connection between the two-metallic sections is liable, through either swelling or shrinkage, to form afpoor fit with the open end of the longer metallic section, this-form of connector has in many instances proved unsatisfactory. Where the wooden connector shrinks, the telescoping lit becomes unduly loose, permitting the sections to drop apart, as well as destroying' the perfect axial alinement of the two sections vwhich should exist to prevent Wrinkling of the curtain rolled thereon.' Also, the loose t allows more or less relative turning movement between the two sections, which throws the sections of the curtainreceiving groove or channel out of true alinernent.' Where the plug swells, it is difficult' to elli'ect the connection of the parts' without first sufficiently turning down or otherwise reduc-ing the ldiameterl of the v,wooden telescoping member; where the latter swells 'when telescepically engagedyit ASpecification of Letters Patent.

.away

CURTAIN-ROLLER.

Patented oct. es, 191s.

Application filed March 1 5, 1909. Serial No. 483,419.

sticks and renders longitudinal adjustment of the curtain roller sections ditiicult. To remedy these defects, as well as to provide a generally stronger and more satisfactory roller, l have devised the roller foriningthe subject-matter of the present invention, and have illustrated an approved mechanical embodiment of the latter in the accompanyindrawings, whereinigure 1 is a top plan view of the coinplete roller, showing the two sections fully closed. Fig. 2 is an enlarged view of the saine, partially broken out and broken away between its ends, showing the tclescoping parts slightly separated. Fig. is a perspective detail of the shorter section, more particularly illustrating` my novel connecting member. Fig. is an enlarged cross-sectional view on the line of Fig. l, also indicating in dotted lines a portion of the curtain wound around the roller.

Referring to the drawing, 5 designates the longer and G the shorter cylindrical section of the roller, made of tin or other suitable sheet metal rolledor otherwise shaped up into cylindrical form; said sections being provided with inwardly bent hollow ribs 5 and 6 that form longitudinal grooves or channels in which is secured the upper transverse edge of the curtain byA means of a wire 7 (Fig. 4:) in a manner commonly praetised and well understood. The section'G is closed at its outer end by the usual disk 8 provided with a pintle 9, while the longer section 5 is likewise provided with a centrally apertured end disk 10 'through which projects the squared end of the usual spring actuated and pawl-held mandrel 11, ali as. well understood in spring curtain rollers of this type.

, Referring now more particularly to that feature constituting the novel subject-mat-y ter of the present invention, 12 designates a longitudinally split metal connector, consisting,` as herein shown, of a piece of sheet metal, preferably of like material to that forming the roller itself, ro ed or otherwise shaped up into cylindrical section, with 'the two thereof spaced sufrir which slot ci for hollowi rib il# n connector l2 at one and, a. i ,9.,

a rc" ly iii-uit "itiisineti-rllic l ronggjly sentirli-rfi er otherwise, in no CIJ the o en end`o the shorter section 6 asv *1 uw: shown at 1A, l

riy telescope the oyen end v of the longer section 5. viousiy, however,

it is immaterial which n ier section carries the connector, and the latter might have a sliding it with both'sections within the pun iew oi the invention,1 in which case the longitudinal slot-13 would extend from end tc end of the connector and engagethe internal ribs of both. in order to maintain thesubstanti'al continuity of the curtain-holding groove or channel, l may also equip the connector 12 with an internally projecting rib 12a lying inwardly of the slot 13,'Which rib may conveniently be Jiornied integral with one margin of the slot and extend across and beneath the other, as siown in Figs. 3 and i l have found in practice that where connector 12 is accurately bent or rolled to a truly circular cross-section, aii'ords a snug and accurate sliding fit Lith the section 5, 'not being liable to the variations in its transverse dimension due to atmospheric conditions, as is the case with wooden connectors, and hence yields results much superior in many ways to those aorded by the latter. i'fcerably, and asherein shown, the connector Section l2 is made of a diameter slightly exceeding the internal diameter of the section with which it telescopes, so that, when forced into the latter, the cylindricai walis of the connector are slightly compressed, and the natural resiiiency.' of

the metal thus affords a very snug tit which maintains the two sections in perfect axial alineznent, even when withdrawn or elongated almost to the point of separation. Where the connector is thus formed, its free end is preferably beveled or tapered, as indicated at l5, which facilitates its entrance into the open end of the section 5. The lon- .:ctudnel slot 13 of the connector member 12 i j of a width such that, when the connector is operatively engaged with the section which it telescopes the longitudinal 'L margins deiining the side slot will snugly embrace the neck of the rentrant rib or ribs of the roller, whereby any relative turning movement of the two sections when united is prevented, 'and consequently the tivo cur-- tain-securing grooves or channels 5a and 6aL are'maintained in perfect alinement, which greatlyv facilitates the threading of the cur tain-securing' wire 7 therethrough.

claim;

shade roller comprising' tubular sheet metal end members, and av tubular sheet metal connectory member each of the endl connector having an expanding tendency'- and thereby maintaining a snug fit Within the end members.

in testimony that 'I claim the foregoing as invention, l have hereunto subscribed my name in the presence of two Witnesses.

EDNARD- E. "WHTMORE vWitnesses: i

SAMUEL N. POND, Mnfrrn: B. Brass. 

